Tracker-bar.



UNITED srnrns PATENT OFFICE. i

GEORGE P. BRAND, OF NEVMT YORK, N'. Y.

TRAUKER-BAR.

Specification of Letters Patent.

Patented Dec. 6, 1910.

Application filed April 7, 1909. Serial No. 488,342.

To all whom it lmay concern:

Be it known that I. Geenen l. BRAND, a citizen ot' the United States of America, and resident ot` New York, in the county and State ot New York, lhave invented certain new and useful Improvements in Tracker `Bars, of 'which the following isa specification. f

This inventionrelates to improvements in tracker-bars designed ornse in players of all character in which a. perforated music sheet is employed. Y

. The` present invention hasvfor its objects among others to provide a simply constructed, cheapyet durable and efficient form ot1V tracker-bar in which the bleeds are readily accessible for cleaning or other, purposes without the necessity of removing the tracker-baror any other part of the player. I also provide for ready access to the exhaust or tension chamber with which ythe bleeds communicate, wathout removal of the trackenbar' or other?portions` or 'the device. It has for .still a further obgect to prevent all tendency towhistling. by avoiding sharp Other objects and advantages of the invention will hereinafter appear and the novel features thereof will be particularly.

.attempt herein toillustrate all of such forms, those herein `shown will serve` to demonstrate the applicability ot'fthe invention in a variety of ways, it being .under stood. howeier. that the invention is yin no wise limited to -oiil'v those forms which I have chosen to disclose in the present case.

The invention. embodied in such preferred forms, is clearly illustratedv in the accompanying drawings, which, with the numerals of reference marked thereon, form a part ot this specification. and inwhich- Figure l n broken awa;v and parts in section, showing a tracker-bar embodying .my present improvements. Fig. 2 is a side elevation .ol the same with portions broken away.

l3 is a vertical cross section through the is a similar view ot a is a top plan with portions Like numerals of reference indicate like parts throughout the several views. Referring to the drawings, 1- designates ythe tracker-bar and :2 the note-holes therein, 3 the tubes leading therefrom for connection with the iexible tubing, not shown. ,f

In those forms of tracker-bar where a single row of noteducts is provided, as lin Figs. l, 2 and 3, there is -formed withiny the tracker-bar a lsingle exhaust channel 4.as seenclearly in Figs. l and 8, and from each note-duct there extends, near the outer tace of the tracker-bar a bleed hole' 5V preferably in an inclined direction, as seen in F ig.'3, affording communication between the note-duct and the chamber t.,y -At one end of the chamber et, there is an opening G with which connects the tube or conduit 7 leading to the tension chamber or action ot the player. l

Upon reference to F ig. 3, it will be readily extending i understoodhow accessible the bleed holes ,v

are for the purpose of cleaning, which may be done by the insertion lcfa "suitable in strument through the note-duct 2 and into the bleed lhole by which any dust orother foreign substance may be easily removed from the bleed hole and into the chamber'i. By reason of the inclination or' the bottom of said chamber, the dust, dirt, etc. will slidel down the same towardv its outer` end from which it maybe readily,removed at any time when desired, byy removal ofthe closure 8, or by turning the samer down,- as indicated by dotted lines in Fig. 3,.soas to open the outlet. end of said Achamber. The closure 8 may be of .any1well-known or .approved form of air-tight closure= torithe chamber, the invention in this regard being in no wise restricted. f

In Fig. 4l, I have shown two chambers 9 and l0, one on each side ot the trackerbar, the bottoms being inclined yas show n in said Fig. t, 'and the bleed holes 1l communicate alternately withthese chambers Ias-will `be clearly understood from Fig. fi. These bleed their ends which communicate with the note ducts. In this form there aretwo ducts or conduitsl and 13 one leading from each chamber, as indicated.7 In this instance there are shown two closures 14 and l5, one for each of the chambers in order to provide ready access thereto for the purpose of cleaning.

*holes may or may notbe countersunk at proximity to the acting face of the tracker- In order to avoid any ltendency or danger of whistling thc bleed holes may be countersunk atv their ends nearest the note-ducts as seen at 1G, so as to avoid sharp corners.

lt will be seen that by the present construction the removal of no part ofY the device is necessary, and no special implement is required in order to clean out the bleed' holes, or to make them larger or smaller as occasion may require. Skilled labor is not necessary as the loperator or any one else can readily clean out lthc'bleed holes when necessary, as, for instance, in case a note should not respond properly.4

that is claimed as new is l. A tracker bar provided with note ducts and bleed holes communicating with the same and disposed at approximately the outer face 'of the tracker barthe lentrances to said bleed holes being visible and accessible through the mouth of said duct.

2. A tracker-bar having a chamber and a bleed 'hole disposed in proximity to 'the acting face of said tracker-bar and in communication with said chamber and with the duct of the tracker-bar, said bleed hole being disposed intermediate the acting face of the tracker-bar and said chamber and accessible through the. mouth of the trackerductin line with said chamber.

3.A' tracker-bar provided with a and a chamber, and a bleed hole disposed in close proximity to the acting face of the trackeiebar and communicating with said chamber and with the duct of the trackerbar, said bleed hole terminating adj acent the outer end of the tracker-duct, the distance from the bleed to the mouth being less than the, diameter of the duct.the bottom wall ot' said chamber being inclined downwardly and away from the tracker-duct.

'4. A tracker-bar provided with a duct and a chamber, a bleed'liole disposed in lclose bar and communicating with said chamber and with the duct of the trackerbai, said bleed hole terminating adjacent the vouter end ot' the tracker-duct, the distance from the bleed to the said outer'end being less than the diameter of the duct-,wthebottoin` wall ot said chamber being inclined downl. wardly and away trom the tracker-duct,

' and a movable closure for-the outer end of said chamber.

5. A tracker-bar provided with a ductand a chamber, and a bleed hole disposed in close. proximity to the acting face of' the tracker-bar and communicating with said chamber, saidv bleed hole terminating adjacent the outer end of the tracker-duct, the

duct

distance from the bleed to the sidmouth being less than the diameter of the duet, the

bottom Wall of said chamber being inclined downwardly and away from the trackerf.

duct,`t'he inlet end of said bleed hole being provided with rounded walls.

6. Avtracker bar having a note duct and a bleed hole in thewa'll thereof at appuntimately tlie outer aceand visible and ac I cessible from the outer face ofthe tracker bar through said duct and having its en# trance end enlarged. I

7. A tracker bar provided with a'tracker duct and having formed in the body thereof a bleed hole communicating with saidtracker duct, the inlet opening of said bleed hole being at the entrance of the duct at the acting facel of the tracker bar andvisible' mout-h of the tracker-.duct being less than the diameter of said duct.

A tracker bar provided with ableed hole formed in the body thereof and opening into a note duct at approximately the acting face of the tracker bai and the eritrance to said duct.

l0. A tracker bai,l provided with a bleed]y vhole formed in the body1 'thereof and opening into, a note duct atapproximately the acting face of the tracker bar and the entrance to said duct and extending at an incline with relationto said note duct.

1l. A tracker-bar having formed in the bodythereofa note-duct and a bleed hole in close proximity Atothe acting face of the tracker-bar and in a lwall of the note-duct adjacent the outer end thereof, said tracker -bar being formed with ay chamber opening through the side f the. body of thetrackerbar and substantially in line with.and in communication with said bleed hole.

1Q, A tracker bar provided with a note duct anda bleed hole communicating with the same and disposed at approximately the outer face of the tracker bar the entrance to said bleed hole being Vvisible and accessible through the mouth of the said duct, and

enlarged for the purpose set forth.

Signed by me at lVashington, District of Columbia, this 30th day of March 1909.

' GEORGE P. BRAND. lVitnesses E. H. BOND, 

